<p>
  heroes works!<br />
  参数id = {{id}}<br />
  参数name = {{name}}<br />
  参数age = {{age}}
</p>
<hr>
<button nz-button nzType="primary" (click)="getHeroes()">获取清单</button>
<p *ngFor="let item of heroes">
  {{item.id}}
</p>